class_docstr: Tests for linear_operator_unitary.LinearOperatorUnitary.
code: def test_unitary_linop_raises_non_square(self):
      with self.assertRaisesRegex(ValueError, "Expected square matrix"):
          x = tf.random.stateless_normal(
              [12, 13],
              seed=test_util.test_seed(sampler_type="stateless"),
          )
          linear_operator_unitary.LinearOperatorUnitary(x)
  
file_path: probability/tensorflow_probability/python/experimental/linalg/linear_operator_unitary_test.py
imports: import tensorflow.compat.v2
  from tensorflow_probability.python.experimental.linalg import linear_operator_unitary
  from tensorflow_probability.python.internal import test_util
label_desc: Use image node_id 1 for calling the LinearOperatorUnitaryTest obj's underlying member method code with example usage: obj.test_unitary_linop_raises_non_square() without return types